Issue 14476. Use DartSDK to open files for debugger URIs like dart:async/future.dart in Editor.

editor/tools/plugins/com.google.dart.tools.debug.core/src/com/google/dart/tools/debug/core/source/DartSdkSourceContainer.java

Index: editor/tools/plugins/com.google.dart.tools.debug.core/src/com/google/dart/tools/debug/core/source/DartSdkSourceContainer.java
diff --git a/editor/tools/plugins/com.google.dart.tools.debug.core/src/com/google/dart/tools/debug/core/source/DartSdkSourceContainer.java b/editor/tools/plugins/com.google.dart.tools.debug.core/src/com/google/dart/tools/debug/core/source/DartSdkSourceContainer.java
new file mode 100644
index 0000000000000000000000000000000000000000..d8c064664543f3282597e7e50defdfadeb40b214
--- /dev/null
+++ b/editor/tools/plugins/com.google.dart.tools.debug.core/src/com/google/dart/tools/debug/core/source/DartSdkSourceContainer.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2014, the Dart project authors.
+ * 
+ * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ * 
+ * http://www.eclipse.org/legal/epl-v10.html
+ * 
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+package com.google.dart.tools.debug.core.source;
+
+import com.google.dart.engine.sdk.DirectoryBasedDartSdk;
+import com.google.dart.engine.source.DartUriResolver;
+import com.google.dart.engine.source.FileBasedSource;
+import com.google.dart.engine.source.Source;
+import com.google.dart.tools.core.model.DartSdkManager;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.debug.core.DebugPlugin;
+import org.eclipse.debug.core.sourcelookup.ISourceContainerType;
+import org.eclipse.debug.core.sourcelookup.containers.AbstractSourceContainer;
+import org.eclipse.debug.core.sourcelookup.containers.LocalFileStorage;
+
+import java.io.File;
+import java.net.URI;
+
+/**
+ * A source container that resolves "dart:" URIs.
+ */
+public class DartSdkSourceContainer extends AbstractSourceContainer {
+  public static final String TYPE_ID = DebugPlugin.getUniqueIdentifier() + ".containerType.dartSdk"; //$NON-NLS-1$
+
+  private static final Object[] EMPTY_COLLECTION = new Object[0];
+
+  public DartSdkSourceContainer() {
+  }
+
+  @Override
+  public Object[] findSourceElements(String path) throws CoreException {
+    DirectoryBasedDartSdk sdk = DartSdkManager.getManager().getSdk();
+    try {
+      URI uri = URI.create(path);
+      Source source = new DartUriResolver(sdk).resolveAbsolute(uri);
+      if (source instanceof FileBasedSource) {
+        String filePath = source.getFullName();
+        File file = new File(filePath);
+        if (file.isFile()) {
+          return new Object[] {new LocalFileStorage(file)};
+        }
+      }
+    } catch (Throwable e) {
+    }
+    return EMPTY_COLLECTION;
+  }
+
+  @Override
+  public String getName() {
+    return "Dart SDK";
+  }
+
+  @Override
+  public ISourceContainerType getType() {
+    return getSourceContainerType(TYPE_ID);
+  }
+}